Improvement in stave-jointing- machines



@tutti @with AMoS GUTTER, `or BOSTON, MASSACHUSETTS.

" `Leners Patent1v0.1o3,151,aaa May 1:51870.

IMPROVEMENT IN' STAVE-J'OINTING- MACHINES.

The Schedule referred to in these Letters Patent and making part of the same.

Tewhom z tmay ,concern Be it `known thatI, AMoS GUTTER, of Boston, in the county-of Suiolk, in the State of' Massachusetts, have invented a new and useful Improvement in Machines for J ointing the-Edges of Staves for Oasks;l and I do hereby declare the following to be a `full and exact description thereof'.

In the drawings'- Figure l is a longitudinal sectional view oi' the ina` chine;

vFigure 2 is and v Figure 3 is a top plan view of the same.

The object of this invention is to provide a machine in which a stave can be clamped, bent to such a curve as it is to have when in the cask, and joint its edges an upright transverse sectional view;

whilein such clamp;` and Itconsists in the construction of the clamp that These inclined. saw-shafts revolve in boxes c and c'.

The boxes 0" are constructed in such manner as to allow the outer ends of shafts c to be adjustedto dif'- ferent heights, and so that thesaws B B will assume different angles from a `perpendicular line, by means of the temper-screws c', placed above andbelow the outer sliding boxes of shafts c c.

The jointing-saws `B B are made fast to and revolve with the inclinedshafts c c, -in bearings upon frame `A and longitudinal. plates A A', which are placed upon each side of the center of the width of the frame, and so constructed 4as that the clamping-carriage D will freely slidel between them longitudinally, and underneath the jointing-saws B B.

' O representsthe presser former.

i D' and D", the holding-dogs, that hold the ends -of staveI G' at either end.'

l :1Dismadefto slide and be adjusted inE the carriage D, sol that di'erent lengths'of staves canbeheld in the same carriage, by means of the screw-shank d slidina slot or mortise, d', and, when .adj usted to the proper place, the nut d" is turned up against the under side of carriage D, which holds it fast in position.

E is a hand-lever, pivoted centrally to carriage D, (the upper-end raises above the carriage, and the lower extending below,) which is slottedrat its end, and has a pin, e, passing transversely through it, the slotted part embracing the two sides of a pivoted curved lever, F, which lia-sa long slot, f, in the curved part and near `its outer end, to admit pin e to freely slide therein.

Lever Fis pivoted, at f', to astud, f", on the under Side of Ycarriage D, and its forward end to rod h, which is irmly attached'to the presser former C.

This presser former acts upon the under side of the stave C', when held by the dogs D' D, to force the mids dle ofthe stave upward to the curvature itis to have when in the cask or barrel, by means ofthe pulling of the upper end of the pivoted hand-lever toward the operator, which will cause the lower end to act, through curved lever F and rod 7i', by the pin e sliding in the curved slot f, and causing lever F to raise the presser former against the stave. The upper side of the presser former being convex in form, forces the stave into the curved shapeseen in iig. 1, and, while in this condition, the carriage D, with the stave, ispushed forward between theA joiuting-saws, which joint the stave to the proper width at all parts'of its length, l

and to the true bevel on its edges, ,when the carriage is immediately reciprocated` back again, thel hand-lever E pushed forward, and the presser-former C v4is retracted by means of the spiral spring t' around rod `h and between the lever F an'd plate t, on the under side of carriage `D, and t-he jointed stave can be taken` from under the holdiug-dogs,'and another one be placed therein and clamped, to go through the same operation. l

that I claim as my invention, and desire to secure by Letters Patent, is

The combination of the pivoted hand-lever E, slotted curved fi'xlcrum-lever F, rod It, having spiral spring fi, and pressereformer C, with the holding-dogs D' D and carriage D, all constructed to operate in the manner described.

AMOS GUTTER. Witnesses F. A. NICHOLS, E. W. HARDING. 

